skip navigation
 » McREL: Mid-continent Research for Education and Learning, delivering research and practical guidance to educators

Nabu's Knee-knocker SignSolution



The smallest possibility for Kid is 62. Then, you get other possibilities by adding 30s. Notice that 30 is the least common multiple of 10 and 6.


Mid could be 14, 29, 44, 59, 74, 89, or 104. Notice that successive possibilities for Mid are 15 apart, and 15 is the least common multiple of 3 and 5.


Lid could be 17, 21, 22, 25, 26, 27, 29, 30, 31, 32, and so on. Once you find four consecutive whole number possibilities for Lid, then any greater whole number is a possibility.


Back to Math Mountain